old chestnut: cheating bellhop

Three men check in to a hotel for one night, and pay $30 for it, up front, split evenly among themselves. Later, the owner realizes that the room really goes for $25, and being an honest man, sends the bellhop up to their room with the $5 change.

However, the bellhop decides the men are going to have trouble splitting the $5 three ways, and decides to pocket $2 himself and gives the men $3 which splits nicely.